Before knowing almost anything about Sunday’s mass public shooting, gun control advocates are once again calling for more gun control. The attack at the First Baptist Church in tiny Sutherland Springs, Texas, claimed 26 lives and left people with an understandable desire to “do something.” One thing is certain: the proposals put forward by gun control advocates wouldn’t have stopped this attack.

What they ignored was what stopped the killer was a good guy with a gun. As one witness said, without the good guy with a gun it “would have been much worse.” If more people were carrying guns, the attack might have been stopped even faster and more lives would have been saved.

Today, the day after the shooting, we know some more about the killer. We now know that one of the victims who attended the church was his ex-mother-in-law. That his conviction was for cracking the skull of his infant son years ago. That he had a “bad conduct” discharge from the military.

If the media waited even a few hours, they would have learned that their calls for regulations — primarily for “universal” background checks — wouldn’t have stopped this attack. Indeed, their proposals wouldn’t have stopped any of the other mass public shootings in the last couple decades. Kelley bought a gun at a gun store, and he passed the background check that the store conducted on him. Lying on the form doesn’t help you evade the computer background check.

Others on MSNBC immediately called for limiting magazine capacities, but a magazine is just a box with a spring in it. They can be made with very simple tools, and now-a-days 3D printers make it an even easier project. We still don’t know if Kelley planned this attack long in advance, though he bought the gun back in April 2016. It is very common for killers to plan mass public shootings one or two years in advance. It's not serious to think that a ban is going to keep anyone other than law-abiding people from obtaining a magazine.

During his press conference early Monday morning in Japan, President Trump worried that the attack was the result of a "mental health problem at the highest level" and called the gunman a, “very deranged individual.” Kelley may well have been suffering from a mental illness, but mental health evaluations shouldn’t be counted for much help. Psychiatrists and psychologists have an extremely poor track record in identifying those who pose a threat to others. Half of the mass public shooters of the Obama years were seeing mental health professionals prior to their attacks. None of these experts identified the killers as a danger to others.

Elliot Rodger, who killed six and injured 14 others near the University of California at Santa Barbara, fooled not only sheriff’s deputies but also the internationally-known Dr. Charles Sophy. Sophy is medical director for the Los Angeles County Department of Children and Family Services. That ought to give people pause before they assume that there’s an easy solution for identifying dangerous individuals.

We know that the attack at the Texas church could have been even worse if it wasn’t for an armed civilian. According to the Texas Department of Public Safety, “A local resident grabbed his rifle and engaged the suspect, the suspect dropped his rifle and fled from the church.”

Something should be done, but the question is what. Texas lets each church decide whether to allow permitted concealed handguns, and we don’t know whether this particular church allowed it. What we do know is that time is crucial. The longer it takes for someone to arrive at the scene with a gun, the more people who will be harmed.

If the media and politicians want to do something effective, they could take a page out of Israel’s playbook. When there is a surge in terrorist attacks , Israeli police call on permitted civilians to make sure that they have their guns with them at all times.